- 30 Business districts
- 1 Business Progress Association
- 5 Business schools
- 46 Businesses (business enterprises)
- 9 Businessmen
- 1 Buss, Robert William, 1804-1875
- 19 Bustleton
- 16 Bustleton Avenue
- 5 Bustleton Hotel
- 53 Busts
- 2 Butcher shops
- 2 Butchers
- 2 Butchers and Drovers Tavern
- 1 Butcher's Hotel
- 2 Butler County, Pennsylvania
- 12 Butler Street
- 1 Butler, B.J. (Benjamin Franklin)
- 1 Butler, Benjamin Franklin, (1818-1893)
- 1 Butler, C. M. (Clement Moore), 1810-1890
- 1 Butler, Pennsylvania
- 1 Butler, Thomas Belden, 1806 - 1873
- 25 Butterflies
- 2 Butterfly (Sculpture)
- 2 Buttermilk Tavern
- 1 Butterworth, H. W. & Sons Iron Foundry & Machine Shop
- 3 Butti, Enrico
- 1 Button, Stephen Decatur, Architect
- 2 Buttons (Fasteners)
- 5 Buttons (information artifacts)
- 3 Buttonwood Hotel
- 1 Buttonwood Mill
- 11 Buttonwood Street
- 4 Buttonwood Tavern
- 2 Buzzi Giberto, Cav. Luigi
- 2 Byberry City Farms
- 2 Byberry Hall
- 3 Byberry Road
- 1 Byron, George Gordon Byron, Baron, 1788-1824
